Canadian Medical Guide > Biological Sciences > Genetic Structures > Genes > Genes, MDR Terms and Definitions

Genes, MDR

Medical Definition:	Genes responsible for multidrug resistance resulting from their overexpression in mammalian cells. Mammalian P-glycoproteins are encoded by small MDR gene familes. The human multidrug resistance 1 (MDR1) gene responds to environmental stress including various anticancer agents. It is a major determinant in the development of resistance to a large number of cancer chemotherapeutic agents. (Biochem Biophys Res Commun 1994;199(3):1428-35; Cancer Res 1994:54(6):1536-41)
Also Called:	Multidrug Resistance Gene-1
Previously Indexed:	Drug Resistance (1986-1994),Drug Resistance, Multiple (1995-1996),Multigene Family (1989-1996)

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